Apparatus for installing tubular rivets



Feb. 9, 1937. E WANER 4 2,069,907

APPARATUS FOR INSTALLING TUBULAR RIVETS Filed July l1, 1955 Patented Feb. 9, 1937 PATENT OFFICE lAPPARATUS FOR INSTALLING TUBULAR RIVETS Harry E. Waner, Akron, Ohio, assignorto TheV B. F. Goodrich Company, New York, N. Y., a corporation of New York Application July 11', 1935, Serial N0. 30,889

8 Claims.

This invention relates to tubular rivets and to methods and apparatus for installing the same.

The problem of fastening articles toA walls of thin sheet metal, especially where one side only of the sheet is available for operation, presents A many difficulties. f The thinness of the metal sheet precludes the use of threaded screws except for exceptionally light loads, and the threadingv provide economy and simplicity of procedure in the application of fastening devices, and to provide a novel fastening element to facilitate'such procedure. Other objects ,will appear from the following description and the accompanying drawing.

Of the drawing:

Fig. 1 is asectional view in elevation showing 30 the apparatus in its preferred form in use in the installation of one of the tubular rivets, the apf. paratus being shown in the position of initially inserting the rivet in an aperture in a sheet metal Wall, dot and dash lines indicating the position of the handles after the rivet has been fully installed. Fig. 2 is a perspective view of a preferred form of the tubular rivet of my invention.

Fig. 3 is a sectional view similar to Fig.'1, with 40 parts broken away, showing the second step in the procedure of installing the rivet.

Fig. 4 is a section taken on line I-l of Fig. 3.

Fig. 5 is a perspective view of a hollow article having a thin wall prepared to receive one of the rivets and with one of the rivets in place.

Referring to the drawing the numeral III desigy nates a thin wall of metal or other rigid material forming a part of a hollow article accessible only from one side, to which it is desired 60 to fasten other parts. The numeral II designates an aperture therein comprising a circulary 65 this invention.

The rivet I3 comprises a tubular body having a ange I4 at one end and preferably formed with an integral key I5 for engaging the key way I2 to prevent rotation of the rivet when it is in place. The opposite extremity of the r'lvet 5 threaded internally as at I6 to provide anchorage for a screw. The wall of the rivet between the threaded portion I6 and the flange I4 is counterbored to'reduce the wall thickness and provide a collapsible portion I'I.

The tubular stem of the rivet is inserted through the aperture II with the ange against the outer surface of the wall. The rivet may then be shortened by endwise pressure so as to collapse the portion Il as seen'in Fig. 3, thereby A15 forming a ange on each side of the metal wall I0.

In order to accomplish such collapse 'of the rivet wall by operation from one side only ofthe wall, the apparatus employed is as follows:

' A setting anvil I8, comprising a. centrally bored fiat ended plug, is mounted in one end of a hollow tubular barrel I9. A draw rod Ziljextend-Y ing through the plug I8 is threaded at one end t'o engage the threads in the rivet I3. Its opposite end is fixed to a draw head 2|,l as by being threaded therein and locked against rotation by a screw 22. Draw head 2| is loosely enclosed by the barrel I9. A tubular cross head 24,' slidably mounted in the barrel between the anvil I8 and ,o the draw head ZI, is provided with trunnions 25, 25' which extend loosely through elongate slots 26, 26 formed in the barrel. A lever 21 hinged by a pin 28 to an ear'28, formed on the side of the barrel is adapted to impart a longitudinal movement to the draw rod 20, to'ward the anvil I8when the lever 2l is forced toward the barrel. If the drawA rod is engaged in the threads of a tubular rivet and the anged head of the rivet is against the anvil, as shown in` Fig. 1, and 40' A coil spring 32, of the compression type, ex-

tending between a plug 33, through which the shaft 30 is journaled at the handle end of the barrel I9, and a collar 3l, fixed to shaft 3l within barrel I9, n'ormally holds the draw rod in its advanced position. 5I

when the rivet is to be inserted in a wan of metal or other thin material, the rivet is screwed onto the advanced end of the draw rod until its flanged head meets the anvil. The rivet is then vil for holding the rivet inplace, a draw rod extending through the anvil and adapted toI engage in the -threaded portionA of the rivet, and means for eiecting a longitudinal movement of the draw rod with respect to the anvil to collapse the rivet.

2. Apparatus for installing internally threaded tubular rivets, said apparatus comprising an anvil for holding the rivet in place, a draw rod extend- .l ing through the anvil: and adapted to engage in the threaded portion of the rivet, means for effecting a longitudinal movement of the draw rod lwith respect to the anvil to collapse the rivet, 36 and means for releasing the draw rod from the rivet.

3. Apparatus for installing internally threaded tubular rivets, said apparatus comprising an anvil for holdingthe rivet in place, a threaded draw -rod extending through the anvil and adapted to engage the threads in the rivet, means for eiecting a longitudinal movement of the draw rod to collapse the rivet, and means forrotating the draw rod to release the rivet.

4. Apparatus for installing internally threaded tubular' rivets, said apparatus comprising an anvil for holding the rivet in place, a threaded` draw rod extending through the anvil and adapted. to

engage the threads in the rivet, means for eiTecting a longitudinal movementof the draw rod to collapse the rivet, means for resiliently urgingthe draw rod to its advanced position through the anvil, and vmeans for rotating the draw rod to release the'rivet.

5. Apparatus `for installing an threaded tubular rivet, said` apparatus comprising a tubular housing having an anvil at one end, a draw rod in the housing and extending through the anvil and adapted to engage the threaded portion of therivet, and means associated with said housing and rod for effecting a longitudinal movement of the rod with respect to the anvil to collapse the rivet.

6. Apparatus for installing an internally threaded tubular rivet, said apparatus comprising a tubular housing having an anvil at one end,

. a draw rod in the housing and extending through' internally the anvil and adapted to engage the threaded portion of the rivet, and means associated with said housing androd for eiecting a longitudinal movement of the rod with respectto the anvil to collapse the rivet, the rod moving means comprising a lever pivoted to the housing and having .a connection with the draw rod.

'7. Apparatus for installing an internally threadedtubular rivet, said apparatus comprising a tubular housing having an anvil at one end, a draw rod in the housing and extending through the anvil and adapted to engage the threaded portion of the rivetyresilient means in said housing urging the rod to its advanced position through the anvil, and means associated with said housing andv rod for effecting a longitudinal movement .of the rod with respect to the anvil to collapse the rivet.

8. Apparatus f or installing an internally threaded tubular rivet, said apparatus comprising a tuhulal1 housing having an arrvilat one end, a draw rod in the housing andextending through the anvil and adapted to engage the threaded portion of the rivet, resilient means in said housing urgingV the rod to its advanced position through the anvil, means associated with said housing and rod foreffecting a longitudinal movement of the rod with respect to the anvil to collapse the rivet -and means for rotating the rod with relation `to the rivet.

A i HARRY E. WANER. 

